fix(auto-derive): printf format starting with '-' breaks bash builtin

[bradymiller]

Summary

Scheduled reconciliation broke today on its first non-empty-diff run with:

```
/home/runner/work/_temp/.../sh: line 21: printf: - : invalid option
printf: usage: printf [-v var] format [arguments]
##[error]Process completed with exit code 2.
```

Reproducer: https://github.com/openemr/demo_farm_openemr/actions/runs/28315987703

Root cause

The reconcile job's `Build PR body` step has:

```bash
printf '- Force-push fresh reconciliation tomorrow ...\n'
printf '- Close this PR automatically ...\n\n'
```

Bash's `printf` builtin parses a leading `-` in the format string as an option flag attempt (`-F`, `-o`, etc.), and aborts with "invalid option" when the option isn't recognized. The string content is treated as the format, not as the value of a `%s`.

Why it slipped past PR #138 review

Prior scheduled runs hit the no-diff early-exit path (workflow closes any open reconciliation PR and returns) before reaching the body-building step. Today's first run that found a real diff (the rel-704/rel-800/rel-810 col-3 deltas + 8.1.1 description bump) exercised the broken code path.

Fix

Pass the bullet content as a `%s` value instead of as the format string:

```bash
printf '%s\n' '- Force-push fresh reconciliation tomorrow ...'
printf '%s\n\n' '- Close this PR automatically ...'
```

Added an inline comment explaining the trap so future edits don't reintroduce it.

Audit

Grepped all `printf` calls in the workflow — only these 2 lines have format strings starting with `-`. Other printfs start with letters, backticks, or `%`, so no others triggered.

Test plan

• CI passes
• Next scheduled run (or manual `workflow_dispatch` mode=reconcile) opens the reconciliation PR cleanly instead of failing in Build PR body

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes
  • Improved formatting for the PR body’s Behavior section so bullet points render consistently.
  • Fixed an issue where leading dashes could be interpreted incorrectly and removed an extra trailing newline in the generated text.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 2b9215bf-6a45-4998-a879-845128607382

📥 Commits

Reviewing files that changed from the base of the PR and between 83fd965 and 4148d4f.

📒 Files selected for processing (1)

• .github/workflows/derive-ip-map.yml

---

📝 Walkthrough

Walkthrough

In .github/workflows/derive-ip-map.yml, two printf calls that render "Behavior" bullet points in the auto-generated PR body are updated from format-string-embedded newlines to printf '%s\n' argument-based form, preventing the leading - from being interpreted as a format option.

derive-ip-map workflow: PR body printf fix

Layer / File(s)	Summary
Fix printf format for PR body bullets .github/workflows/derive-ip-map.yml	Replaces printf "- ...\n" with printf '%s\n' "- ..." for the two Behavior bullet lines, and adjusts trailing newline handling on the final bullet with an explanatory comment.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• openemr/demo_farm_openemr#138: Also modifies the same printf PR body construction logic in .github/workflows/derive-ip-map.yml.

Poem

A dash at the start gave old printf a fright,
It thought it a flag in the dead of the night!
But '%s\n' said the rabbit, "just pass it as data!"
No more mangled bullets — we'll format them straighter.
🐇✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the bash printf leading-dash bug fixed in the workflow.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

_{Comment @coderabbitai help to get the list of available commands.}